When installing the package I'm seeing this warning:
DEPRECATION: cumulus-message-adapter-python is being installed using the legacy 'setup.py install' method, because it does not have a 'pyproject.toml' and the 'wheel' package is not installed. pip 23.1 will enforce this behaviour change. A possible replacement is to enable the '--use-pep517' option. Discussion can be found at https://github.com/pypa/pip/issues/8559
I'm currently using version 2.2.0 so I'm not sure if this has been addressed in the latest release.